Pencil



June 13, 1933.

F. c. DEL; Er AL PENCIL File'd Aug. 25, 1930 Patented .time 13, 1933UNITED STATES PATENT oFFlcE 'FRANK o. DELI AND WILLIAM D. GRosEoLosE, orCHICAGO, ILLINoI's, AssIGNons rro' AUTOPOINI' COMPANY, OF CHICAGO,ILLINOIS, A CORPORATION OF ILLINOIS PENCIL Application lezl August 25,1930. Serial No. 477,624.

Our invention relates to pencils and more particularly to inechanicalpencils.

It is conceded that there are innumerable methods and manners ofconstructing the common mechanical pencil, some of which are quiteinefficient and the others serving to produce an inferior, troublesomeconstruction. A further objection to the common form of mechanicalpencil relates tothe tip thereof, which is generally formed of metal andcontacts the lower end of the pencil barrel. In use it has been foundundesirable to provide the entire tip of metal for the reason that thetip is thereby rendered quite slippery and frequently causesperspiration to form on the ngers if the pencil is used for any greatlength of time, thus making the use thereof somewhat unsatisfactory.

An object of our invention is to provide a moldedtip, the greaterportion of which 4our invention;

Fig, 2 is a cross sectional view taken on the lines Q-Qof Fig. 1.;

Fig. 3 is a cross-sectional view taken on the lines 3-3 of Fig. 1, and

i Fig.'4 is a fragmentary longitudinal sec tional view of a modifiedform of tip construction.

By reference to Fig. 1 it will be seen that we have provided'a barrel 10having an axial opening 11 therein, an eraser 12, and at the lower endthereof the reduced portion 13 having the shoulder 14. The tip comprisesthe lead tubeor guide 15 the lower `end of which is split at 16 toinsure the retention of a lead. Near the lower end of the tube 15 weprovide a circumferential groove for a purpose toV be later described.The upper end of said tube 15 is adapted to be received withinthe-aperture 11 of the barrel 10, and is provided with an internalthread 18 for co-operation with the threads 19 on the plunger 20 adaptedto travel therethrough and to force a lcad \(not shown) out from thelower split end 16. At the lower end of the tube 15, We provide thetapered non-metallic molded portion 21, the lower end of which isadapted to be received within the groove thus providing an anchortherefor. ,The upper portion of said molded portion 21 is provided With'a socket 22 adapted to co-operate Withthe reduced end portion 13 of thebarrel. The upper peripheral edge 23 of the molded portion 21 is adaptedto contact the shoulder 14 on the barrel.

Thus it will be seen that we have provided a tip of two parts moldedtogether. The provision of the groove 17 serves a double purpose; first,to serve as a limit for the molded portion, and second, to .anchor thesame firmly tothe tube. Obviously the lack of the groove 17 wouldsubject the otherwise very thin lower end of the molded portion topossible chipping or breaking off.

We have shown another form of our tip in Fig. 4 wherein the parts aresubstantially identical except for the tip which comprises the metal tipportion 24, the lead tube 25 centrally disposed therein, and the moldedportion 26' serving to unit the tip and the lead tube. As shown the tip24 is provided at its upper end with a crimped edge 27 serving as ananchor when the molded material is forced past it. The upper end of themolded portion 26 is suitably formed to interfit with the lower end ofthe pencil barrel and to contactthe shoulder thereon. If desired the Ylower end of the tip portion 24 may have the slit 28 to provide forexpansion when the lead is forced therethrough'.

Obviously our construction is of the utmost simplicity and` economy ofmanufacture and provides a tip which is all that is desired in a Writingimplement, as well as the advantage of the availability of variouscolors in the molded material if desired.

Obviously modifications and variations may be made the two formsdisclosed, and

wedo not wish to be limited except as indicated in the appended claim.

We claim:

In combination, a cylindrical pencil body composed of non-metallicmoldable material having an axial opening, the lower end of the bodyproviding a reduced portion and a shoulder, a tapered portion alsocomposed of non-metallic nioldable material and'having a socket adaptedto receive the reduced end of the body, the upper end of the taperedportion lying against said shoulder, whereby the line of separation isat the junction of the cylindrical body with the tapered portion, ametal tube firmly anchored within said non-metallic moldable taperedportion 'and adapted to project into the axial opening in the body, andlead advancing mechanism cooperating with said tube and body.

In testimony whereof We have afixed our.

signatures.

FRANK C. DELI. WILLIAM D. GROSECLOSE.

ISIS`

